21-14=7x

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Solution for 21-14=7x equation: 



21-14=7x

We move all terms to the left:

21-14-(7x)=0

We add all the numbers together, and all the variables

-7x+7=0

We move all terms containing x to the left, all other terms to the right

-7x=-7

x=-7/-7

x=1

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